Plant Sciences Commons^™

Agrobacterial Diversity And Competitive Interactions Within An Infected Sunflower, Veronica Mateo

Kansas State University Undergraduate Research Conference

Agrobacterial Diversity and Competitive Interactions Within an Infected Sunflower

Veronica E. Mateo, Kansas State University

Faculty Advisor/Mentor: Thomas Platt, Ph.D., tgplatt@ksu.edu

Co-Author(s): Emireth Monarrez, Seward County Community College; Priscila Guzman, Kansas State University; Ashlee Herken, Kansas State University; Teresa Shippy, Kansas State University

Bacterial communities are highly diverse with each being distinct in composition. Agrobacterium tumefaciens is a common soilborne plant pathogen. Some A. tumefaciens strains can cause crown gall disease, in which infected plants develop a tumor. This bacterium disrupts the host plant by genetically transforming plant cells thereby manipulating the plant’s physiology to benefit the pathogen. Competitive interactions …

Controlling Soil-Borne Disease In Soybean With A Mustard Cover Crop, G. F. Sassenrath, C. Little, K. Roozeboom, X. Lin, D. Jardine

Kansas Agricultural Experiment Station Research Reports

Charcoal rot is a soil-borne disease that is prevalent in southeast Kansas. The disease infects multiple crops, including soybean, and causes yield reductions. A high-gluco­sinolate mustard with biofumigant properties reduced the population levels in soil and in soybean plants of the fungus (Macrophomina phaseolina) that causes charcoal rot. In this study, management practices that incorporate use of mustard as a cover crop in soybean production systems were tested. Results indicate that tillage increases the char­coal rot fungus. The mustard cover crop was tested in field studies for its impact on soil health, fungal disease and propagules, and soybean …

Evaluating Large Patch-Tolerant And Cold Hardy Zoysiagrass Germplasm In The Transition Zone, Mingying Xiang, Jack Fry, Megan Kennelly

Kansas Agricultural Experiment Station Research Reports

More than 2,800 zoysiagrass progeny, all having a single parent in common that exhibited tolerance to large patch, were evaluated in several transition zone states for quality characteristics and large patch tolerance. From these evaluations conducted over several years, 10 progeny have been identified for further evaluation that have good quality and large patch tolerance that is superior to Meyer zoysiagrass.

Influence Of Soybean Planting Date On Sudden Death Syndrome And Soybean Yield, E. A. Adee, C. R. Little, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Sudden death syndrome (SDS) is a disease caused by the soilborne fungusFusarium virguliforme. This fungus prefers wet conditions and thus is usually most severe in irri­gated fields. Sudden death syndrome tends to be most severe on well-managed soybeans with a high yield potential. It also tends to be more prevalent on fields that are infested with soybean cyst nematode (SCN) or planted early when soils are wet and cool. Historical yield losses from this disease are generally in the range of 1–25%.

Soybean planting dates have been moving increasingly earlier in much of the soybean growing region, including …

Modeling Wheat Susceptibility To Disease, H. Zhao, G. F. Sassenrath, X. Lin, R. Lollato, E. D. De Wolf

Kansas Agricultural Experiment Station Research Reports

Fusarium Head Blight (FHB) or head scab is a disease caused by the soil-borneFusariumfungus. The disease occurs frequently in southeast Kansas and can result in reduc­tions in wheat yield and quality because of the mycotoxins developed by the fungus. Timely application of fungicides during the heading period of wheat is one option to reduce the fungus and control the infection rate. This study reports our research on use of fungicides to control head scab and improve wheat yield. We developed a model to predict wheat heading date. Accurate knowledge of wheat stage is the first step in developing …